Continuous monitoring of noise levels in the Gulf of Catania (Ionian Sea). Study of correlation with ship traffic
2017
Viola, S. | Grammauta, R. | Sciacca, V. | Bellia, G. | Beranzoli, L. | Buscaino, G. | Caruso, Fabbio | Chierici, F. | Cuttone, G. | D’Amico, A. | De Luca, V. | Embriaco, D. | Favali, P. | Giovanetti, G. | Marinaro, G. | Mazzola, S. | Filiciotto, F. | Pavan, G. | Pellegrino, C. | Pulvirenti, S. | Simeone, F. | Speziale, F. | Riccobene, G.
Acoustic noise levels were measured in the Gulf of Catania (Ionian Sea) from July 2012 to May 2013 by a low frequency (<1000Hz) hydrophone, installed on board the NEMO-SN1 multidisciplinary observatory. NEMO-SN1 is a cabled node of EMSO-ERIC, which was deployed at a water depth of 2100m, 25km off Catania. The study area is characterized by the proximity of mid-size harbors and shipping lanes. Measured noise levels were correlated with the passage of ships tracked with a dedicated AIS antenna. Noise power was measured in the frequency range between 10Hz and 1000Hz. Experimental data were compared with the results of a fast numerical model based on AIS data to evaluate the contribution of shipping noise in six consecutive 1/3 octave frequency bands, including the 1/3 octave frequency bands centered at 63Hz and 125Hz, indicated by the Marine Strategy Framework Directive (2008/56/EC).
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